IM 25.055AC UA (C/6-01)
AUTOMATIC CHLORINATOR - 3000LB/24HR
10
installed that will not give more than five inches of water differential
between the module and vacuum regulator at the maximum chlori-
nator feed rate. Note that the equivalent length of the fittings must be
added to the tubing length to obtain the total equivalent length as
shown on the graph.
2.16 Injector Arrangements for Intermittent Start-Stop Operation
If the gas feeder is to be operated intermittently in conjunction with a pump
or other equipment, this is usually accomplished by one of the following:
• Two-inch injectors with three-way shut-off valves may be fitted with
solenoid valves as shown in Dwgs. 25.100.006.122, 25.100.006.142,
and/or 25.100.006.152 in this section. Material for this purpose is
furnished only when specifically listed in the order.
• Other injectors may be shut off by means of an electrically operated
valve in the water supply line to the injector. In this case, flexible
polyethylene or rigid PVC pipe is recommended for a minimum of
three feet immediately upstream of the injector. This should reduce
corrosion of metal pipe and components (valves, pump impellers, etc.)
caused by diffusion of chlorine solution during shut-down periods.
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